Mango Guacamole

2 large avocados (I like to use the big ones that come from Mexico, not the Haas)
1/4 red onion, very finely diced
1 red Fresno pepper, small diced (or red serrano)
1/4 cup (roughly- I never actually measure this) chopped cilantro
2 garlic cloves, finely minced
1 large juicy lime (plus more if needed)
1/2 large mango, diced into 1/4" cubes
kosher salt to taste

Mash the avocados in a bowl with a fork, add everything else except the mango and mix gently with your fork. Taste it at this point to see if it needs more lime or salt. I like to add half the mango and very gently mix it into the guacamole and then put the rest over the top so that it looks fresh and bright. Serve with tortilla chips and margaritas or Mexican beer.